Obama Plans Fast Action to Tighten Financial Rules

By STEPHEN LABATON

WASHINGTON — The Obama administration plans to move quickly to tighten the nation’s financial regulatory system.

Officials say they will make wide-ranging changes, including stricter federal rules for hedge funds, credit rating agencies and mortgage brokers, and greater oversight of the complex financial instruments that contributed to the economic crisis.

Broad new outlines of the administration’s agenda have begun to emerge in recent interviews with officials, in confirmation proceedings of senior appointees and in a recent report by an international committee led by Paul A. Volcker, a senior member of President Obama’s economic team.